Most sensor deployments so far scarcely consider the non-uniform energy consumption in wireless sensor networks. As a result, considerable energy is wasted and energy utilization is low when networks fail. Therefore minimum nodes deployment problem is raised, which is subject to coverage and networking lifetime threshold. Motivated by delivery characteristics in wireless sensor networks, two solutions, nodes decreasing placement and density decreasing deployment, are presented, aiming at high energy utilization and minimum residual energy. Compared with the existing deployments, the two novel schemes deploy less sensor nodes, maintain less energy when nodes fail. Simulations reveal that energy efficiency of two schemes nearly reaches 3～4 times of the existing solutions.